Finding the Fourth Proportional to 221,443,807.20, 332,165,710.80 and 205,319,493.60
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Solution
The fourth proportional to 221,443,807.20, 332,165,710.80 and 205,319,493.60 is: 307,979,240.40
Step by Step Solution
- Step 1: Write the proportion equation
221,443,807.20 : 332,165,710.80 = 205,319,493.60 : x - Step 2: Convert to fraction form
221,443,807.20/332,165,710.80 = 205,319,493.60/x - Step 3: Cross multiply
221,443,807.20x = 332,165,710.80 × 205,319,493.60 - Step 4: Simplify right side
221,443,807.20x = 68,200,095,532,740,048 - Step 5: Solve for x
x = 68,200,095,532,740,048/221,443,807.20 - Step 6: Final answer
x = 307,979,240.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.